My son is preparing for Grade 2 piano this term. He learns with a peripatetic teacher at school and shares the 20 minute lesson with another child, so sometimes I wonder if there's enough time to cover everything. He says he hasn't done any aural exercises yet, and for his Grade 1 they just did a minimal amount of preparation for that part of the exam.
Can I help him at home? I got to grade 3 back in the 1980s, so know the basics and just need some guidance on the best thing to use. Is there a recommended app or book?